Sample 3 - IMB-IO p_write_indv

Sample 3 - IMB-IO p_write_indv#

The following example shows the results of the p_write_indv benchmark:

<..> IMB-IO -np 2 p_write_indv -npmin 2
#---------------------------------------------------
# Date                  : Thu Sep  4 13:43:34 2008
# Machine               : x86_64
# System                : Linux
# Release               : 2.6.9-42.ELsmp
# Version               : #1 SMP Wed Jul 12 23:32:02 EDT 2006
# MPI Version           : 2.0
# MPI Thread Environment: MPI_THREAD_SINGLE

# New default behavior from Version 3.2 on:
# the number of iterations per message size is cut down
# dynamically when a certain run time (per message size sample)
# is expected to be exceeded. Time limit is defined by variable
# SECS_PER_SAMPLE (=> IMB_settings.h)
# or through the flag => -time

# Calling sequence was:
# ./IMB-IO p_write_indv -npmin 2
# Minimum io portion in bytes:   0
# Maximum io portion in bytes:   16777216
#
#
#
# List of Benchmarks to run:
# P_Write_Indv
#--------------------------------------------------------------
# Benchmarking P_Write_Indv
# #processes = 2
#--------------------------------------------------------------
#
#    MODE: AGGREGATE
#
  #bytes #rep.s t_min[μsec]     t_max     t_avg Mb/sec
       0     50       ..         ..        ..      ..
       1     50
       2     50
       4     50
       8     50
      16     50
      32     50
      64     50
     128     50
     256     50
     512     50
    1024     50
    2048     50
    4096     50
    8192     50
   16384     50
   32768     50
   65536     50
  131072     50
  262144     50
  524288     32
 1048576     16
 2097152      8
 4194304      4
 8388608      2
16777216      1

#--------------------------------------------------------------
# Benchmarking P_Write_Indv
# #processes = 2
#--------------------------------------------------------------
#
#    MODE: NON-AGGREGATE
#
  #bytes #rep.s t_min[μsec]     t_max     t_avg Mb/sec
       0     10     ..           ..         ..    ..
       1     10
       2     10
       4     10
       8     10
      16     10
      32     10
      64     10
     128     10
     256     10
     512     10
    1024     10
    2048     10
    4096     10
    8192     10
   16384     10
   32768     10
   65536     10
  131072     10
  262144     10
  524288     10
 1048576     10
 2097152      8
 4194304      4
 8388608      2
16777216      1

# All processes entering MPI_Finalize